Whenever I wear, it's almost always one pair of control top with the crotch cut open and then two more pairs of control top over that. I love having my cock between two layers! Occasionally I'll put a leotard over that, but usually it's an under-armor-style compression tee on my upper body. When my SO wears for me, I prefer her to wear a pair with the crotch cut out and an intact pair over that so I can enjoy her legs etc fully covered with the intact hose, then pull them off and fuck her through the modified pair--reduces the temptation to keep tearing crotches out that way